Version 2.78

Part Descriptions

LP16738-4   Rheumatoid factor
Rheumatoid factor (RF or RhF) is a blood test performed in patients with suspected rheumatoid arthritis (RA). It is an auto-antibody directed against the Fc portion of IgG, which is itself an antibody. RF and IgG form immune complexes, which are part of the disease process (serum sickness) of various rheumatological diseases. Storage/Transport Temperature: 1 mL plasma or serum, 2-8°C. (Min: 0.2 mL) Submit specimen in an ARUP Amber Transport Tube. Rheumatoid factor can also be a cryoglobulin (antibody that precipitates on cooling of a blood sample); it can be either type 2 (monoclonal IgM to polyclonal IgG) or 3 (polyclonal IgM to polyclonal IgG) cryoglobulin. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Rheumatoid factor (Wikipedia)

LP16738-4   Rheumatoid factor
Antibodies found in adult rheumatoid arthritis patients that are directed against gamma-chain immunoglobulins. Source: National Library of Medicine, MeSH 2006

LP7238-1   Body fld
The LOINC "Body fld" System represents body fluids other than serum, plasma, blood, urine, and cerebrospinal fluid. When a LOINC term with the System "Body fld" is used, the specific specimen source or body fluid type should be reported elsewhere with the result. Where more specific terms for pleural, peritoneal, synovial fluid, etc. exist, we encourage you to use the more specific terms. In contrast to "Body fld", the System "Asp" in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst. "Asp" is used for abnormal fluid collections that are aspirated, while "Body fld" is used for named body fluids, such as synovial fluid or peritoneal fluid, that are not inherently pathologic. Source: Regenstrief LOINC

Fully-Specified Name

Component
Rheumatoid factor
Property
ACnc
Time
Pt
System
Body fld
Scale
Qn
Method

Additional Names

Short Name
Rheumatoid fact Fld-aCnc
Display Name
Rheumatoid factor Qn (Body fld)
Consumer Name Alpha Get Info
Rheumatoid factor, Body fluid

Basic Attributes

Class
SERO
Type
Laboratory
First Released
Version 2.04
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
7731

Member of these Groups Get Info

LOINC Group Group Name
LG3254-2 Rheumatoid factor|ACnc|Pt|Body fld

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Rheumafaktor:Arbiträre Konzentration:Zeitpunkt:Körperflüssigkeit:Quantitativ:
de-AT German (Austria) Synonyms: Rheumafaktor /SM
el-GR Greek (Greece) Ρευματοειδής παράγοντας:Αυθαίρετη συγκέντρωση:Χρονική στιγμή:Σωματικό υγρό:Ποσοτική:
Synonyms: RF
es-MX Spanish (Mexico) Factor reumatoide:Concentración arbitraria:Punto temporal:Fluído corporal:Cuantitativo:
es-ES Spanish (Spain) Factor Reumatoide:Concentración arbitraria:Punto temporal:Fluido corporal:Qn:
Synonyms: Cuantitativo
es-AR Spanish (Argentina) factor reumatoideo:concentración arbitraria:punto en el tiempo:líquido corporal, no especificado:cuantitativo:
et-EE Estonian (Estonia) Reumatoidfaktor:Acnc:Pt:Fx:Qn:
Synonyms: Juhuslik Kehavedelik Kvantitatiivne
fr-CA French (Canada) Facteur rhumatoïde:Concentration arbitraire:Temps ponctuel:Liquide biologique:Quantitatif:
fr-FR French (France) Facteurs rhumatoïdes:Arbitraire/Volume:Ponctuel:Liquide biologique:Numérique:
fr-BE French (Belgium) Facteur rhumatoïde:Concentration arbitraire:Temps ponctuel:Liquide biologique:Quantitatif:
Synonyms: RF
it-IT Italian (Italy) Fattore reumatoide:ACnc:Pt:Liquido corporeo:Qn:
Synonyms: Concentrazione Arbitraria FR Liquido corporeo Punto nel tempo (episodio) Sierologia (anticorpi e la maggior parte degli ant
ko-KR Korean (Korea, Republic Of) 류마티스 인자:임의농도:검사시점:체액:정량:
nl-NL Dutch (Netherlands) reumafactor:eenheid/volume:moment:lichaamsvocht:kwantitatief:
pl-PL Polish (Poland) Czynnik reumatoidalny:stężenie w jednostkach umownych:punkt w czasie:płyn ustrojowy:ilościowy:
pt-BR Portuguese (Brazil) Fator reumatóide:ACnc:Pt:LiqOrg:Qn:
Synonyms: ; Rheumatoid fact; RF; Arbitrary concentration; Point in time; Random; BF; Fluid; Body fluid; FLU; Fl; Quantitative; QNT; Quant; Quan; Fac; Fact; Serology
ru-RU Russian (Russian Federation) Ревматоидный фактор:ПроизвКонц:ТчкВрм:Тело ждк:Колич:
Synonyms: Количественный Произвольная концентрация Тела жидкость Точка во времени;Момент
tr-TR Turkish (Turkey) Romatoid faktör:SçKons:Zmlı:Vücut sv:Kant:
uk-UA Ukrainian (Ukraine) Ревматоїдний фактор:Довільна Концентрація:МоментЧасу:Рідини тіла:Кількісно:
Synonyms: Arbitrary concentration; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Fac; Fact; Fl; Fld; FLU; Fluid; Point in time; QNT; Quan; Quant; Quantitative; Random; RF; Serology
zh-CN Chinese (China) 类风湿因子:任意型浓度:时间点:体液:定量型:
Synonyms: RF;Rheumatoid Factor 任意型浓度(单位体积);任意浓度;单位体积的任意单位数;人工型浓度 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 因素 时刻;随机;随意;瞬间 物体 系数 血清;血清学;血清学检验项目;血清学检验项目 (非微生物学);血清学检验项目（非微生物学）;血清学检验项目类;血清学检验项目类 (非微生物学);血清学类;血清学类检验项目;血清学类检验项目 (非微生物学);血清学类试验;血清学类试验 (非微生物学);血清学试验;血清学试验 (非微生物学);血清学试验（非微生物学）;血清学试验类 (非微生物学);血清类

Example Units

Unit Source
units/mL REGENSTRIEF
[IU]/mL Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=30231-5